

gilgais(MASS)                                R Documentation

_L_i_n_e _T_r_a_n_s_e_c_t _o_f _S_o_i_l _i_n _G_i_l_g_a_i _T_e_r_r_i_t_o_r_y

_D_e_s_c_r_i_p_t_i_o_n_:

     This dataset was collected on a line transect survey in
     gilgai territory in New South Wales, Australia.  Gil-
     gais are natural gentle depressions in otherwise flat
     land, and sometimes seem to be regularly distributed.
     The data collection was stimulated by the question: are
     these patterns reflected in soil properties?  At each
     of 365 sampling locations on a linear grid of 4 meters
     spacing, samples were taken at depths 0-10 cm, 30-40 cm
     and 80-90 cm below the surface. pH, electrical conduc-
     tivity and chloride content were measured on a 1:5
     soil:water extract from each sample.

_A_r_g_u_m_e_n_t_s_:

    pH00: pH at depth 0-10cm

    pH30: pH at depth 30-40cm

    pH80: pH at depth 80-90cm

     e00: electrical conductivity in mS/cm  (0-10 cm)

     e30: electrical conductivity in mS/cm (30-40 cm)

     e80: electrical conductivity in mS/cm (80-90 cm)

     c00: chloride content in ppm  (0-10 cm)

     c30: chloride content in ppm (30-40 cm)

     c80: chloride content in ppm (80-90 cm)

_F_o_r_m_a_t_:

     This data frame contains the following columns:

_S_o_u_r_c_e_:

     Webster, R. (1977) Spectral analysis of gilgai soil.
     Australian Journal of Soil Research 15, 191-204.

     Laslett, G. M. (1989) Kriging and splines: An empirical
     comparison of their predictive performance in some
     applications (with discussion).  Journal of the Ameri-
     can Statistical Association, 89, 319-409

